Remove experimental fast-codegen. We are no longer working on this

src/fast-codegen.h

-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_FAST_CODEGEN_H_
-#define V8_FAST_CODEGEN_H_
-
-#if V8_TARGET_ARCH_IA32
-#include "ia32/fast-codegen-ia32.h"
-#else
-
-#include "v8.h"
-
-#include "ast.h"
-#include "compiler.h"
-#include "list.h"
-
-namespace v8 {
-namespace internal {
-
-class FastCodeGenSyntaxChecker: public AstVisitor {
- public:
-  explicit FastCodeGenSyntaxChecker()
-      : info_(NULL), has_supported_syntax_(true) {
-  }
-
-  void Check(CompilationInfo* info);
-
-  CompilationInfo* info() { return info_; }
-  bool has_supported_syntax() { return has_supported_syntax_; }
-
- private:
-  void VisitDeclarations(ZoneList<Declaration*>* decls);
-  void VisitStatements(ZoneList<Statement*>* stmts);
-
-  // AST node visit functions.
-#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
-  AST_NODE_LIST(DECLARE_VISIT)
-#undef DECLARE_VISIT
-
-  CompilationInfo* info_;
-  bool has_supported_syntax_;
-
-  DISALLOW_COPY_AND_ASSIGN(FastCodeGenSyntaxChecker);
-};
-
-
-class FastCodeGenerator: public AstVisitor {
- public:
-  explicit FastCodeGenerator(MacroAssembler* masm)
-      : masm_(masm), info_(NULL), destination_(no_reg), smi_bits_(0) {
-  }
-
-  static Handle<Code> MakeCode(CompilationInfo* info);
-
-  void Generate(CompilationInfo* compilation_info);
-
- private:
-  MacroAssembler* masm() { return masm_; }
-  CompilationInfo* info() { return info_; }
-
-  Register destination() { return destination_; }
-  void set_destination(Register reg) { destination_ = reg; }
-
-  FunctionLiteral* function() { return info_->function(); }
-  Scope* scope() { return info_->scope(); }
-
-  // Platform-specific fixed registers, all guaranteed distinct.
-  Register accumulator0();
-  Register accumulator1();
-  Register scratch0();
-  Register scratch1();
-  Register scratch2();
-  Register receiver_reg();
-  Register context_reg();
-
-  Register other_accumulator(Register reg) {
-    ASSERT(reg.is(accumulator0()) || reg.is(accumulator1()));
-    return (reg.is(accumulator0())) ? accumulator1() : accumulator0();
-  }
-
-  // Flags are true if the respective register is statically known to hold a
-  // smi.  We do not track every register, only the accumulator registers.
-  bool is_smi(Register reg) {
-    ASSERT(!reg.is(no_reg));
-    return (smi_bits_ & reg.bit()) != 0;
-  }
-  void set_as_smi(Register reg) {
-    ASSERT(!reg.is(no_reg));
-    smi_bits_ = smi_bits_ | reg.bit();
-  }
-  void clear_as_smi(Register reg) {
-    ASSERT(!reg.is(no_reg));
-    smi_bits_ = smi_bits_ & ~reg.bit();
-  }
-
-  // AST node visit functions.
-#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
-  AST_NODE_LIST(DECLARE_VISIT)
-#undef DECLARE_VISIT
-
-  // Emit code to load the receiver from the stack into receiver_reg.
-  void EmitLoadReceiver();
-
-  // Emit code to load a global variable directly from a global property
-  // cell into the destination register.
-  void EmitGlobalVariableLoad(Handle<Object> cell);
-
-  // Emit a store to an own property of this.  The stored value is expected
-  // in accumulator0 and the receiver in receiver_reg.  The receiver
-  // register is preserved and the result (the stored value) is left in the
-  // destination register.
-  void EmitThisPropertyStore(Handle<String> name);
-
-  // Emit a load from an own property of this.  The receiver is expected in
-  // receiver_reg.  The receiver register is preserved and the result is
-  // left in the destination register.
-  void EmitThisPropertyLoad(Handle<String> name);
-
-  // Emit a bitwise or operation.  The left operand is in accumulator1 and
-  // the right is in accumulator0.  The result should be left in the
-  // destination register.
-  void EmitBitOr();
-
-  MacroAssembler* masm_;
-  CompilationInfo* info_;
-  Register destination_;
-  uint32_t smi_bits_;
-
-  DISALLOW_COPY_AND_ASSIGN(FastCodeGenerator);
-};
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_TARGET_ARCH_IA32
-
-#endif  // V8_FAST_CODEGEN_H_